Incandescent-lamp guard.



W. N. MATTHEWS.

IN GANDBSGENT LAMP GUARD.

APPLICATION FILED JAN. 11. 1909.

Patented July 11, 1911.

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Witnesses N TED STATES. PATENT ,OFFIGE.

WILLIAM N.- MATTHEWS, or ST. LOUIS, mam, assmnon 'ro w. N. MATTHEWS &

' 1330.; or S LOUIS, MISSOURI, A FIRM. a

. IncAnnEscEN'r-LAMP GUARD.

sp ecificationot Letters melt. P t nt d July 11, 1911,

Application filed January 11, 1909. Serial No.'471,750.

To all whom et'inay concern: i Be it known that I, WIL' Lu! 'rnnws, acitizen of the. United States, residing at St. Louis, Missouri, haveinvented acert-ain'new and useful Improvement in Incandescent-LampGuards, of which the following is-a full, clear, and exact description,such as will enable others skilled in the art to which it appertains tomake and use the;

cation, in which- Figure l is a verticalsectiona-lview throughiiiyimprovedlampiguard showing the same .in position on an incandescentlamp socket; Fig.2 .is a detailed view of the guard dctached. Figs. 3, 4and 5 are detailed views of modified forms'of bottom guard wires. Fig. 6is-an enlarged vertical section through the ehd of the'clamping band andshowing a modified form of the threaded opening therein. 1 Thisinvention relates to a new and use-' ful improvement in guards forincandescent lamps, the object being to construct a guard which will besimpleand' cheap, and one which. will prevent the removal of both theguard and the incandescent lamp from the socket except by the use ofappropriatetools. In the drawings, 1 indicates an incandescentlampsocket, which may be of any ordinary or'approvcd construction, and2'is the incandescent lamp mounted in said socket; 3 is the clampingband of my lamp guard, which band is provided with vertical band. Theinnermost walls of the clamping 3 is the intermediate spacing ringfittingwithin jogs or bends in the vertical guard wires, which guardwires are spaced apart,

N. MA'T- and likewise the ring is held in position with relation. tosaid guard wires, by means of I metal clips iwhicli are clamped uponthe. ring on each side of aguard wire. Th'e lower ends of the guard wireare bent around a bottom ring 5, which bottom ring is prefcrablyprovided with jogs or bends at intervals to properly spacetheguard'wires.

In order to cushion the incandescent lamp within the guard, Iarrangecushion wires 6 within the'guard, said cushion wiresconsistingpreferably ofsingle strands of wire bent into serpentine orzigzag form,- the bent portions lying substantially in a vertical planeso" that they will engage the incandescent lamp and afiord an extendedbearing therefor. as shown in Fig. 1. The ends of these cushioning w resmay be twist- .ed together and bent around thesp'a'cing ring 3, or othermeans may be employed to support the cushioning ring within the guard,if desired.

The guard above described is preferably dipped in solder or galvanizingmaterial,

which solders the various wires and parts together. Of course, thethreaded opening for the clamping screw is tapped and the clamping screwis introduced after the dipping operation.

To prevent the removallof the lamp except bya. person provided withproper tools either to remove the guard, or to cut the guard wires, Iprovide. bottom guard wires as shown In Figs. 2'to 5 inclusive. In Fig.

2 this bottom guard wire consists of three wires formed w.1thintermediate loops 8, to

-which the ends of adjacent wires are con nected, the extremities ofsaid wires being bent around the bottom guard ring. In Fig. 3 the endsof the bottom guard wires 9 are twisted together and bent over the guardring. In. Fig. 4 the bottom guard wire is in one piece twisted alongpart of its length, the ends being spread apart to engage the bottomguard ring. In Fig. 5 there are three bottom guard wires which areconnected together at one end and have their outer ends bent around thebottom guard ring.

The projecting ends of the clamping hand are preferably cut-away as at3, Figs. 1 and 2, so as to permit. the introduction of a reflector orshade S on the guard. The openings in standard-sized shades are suchthat they cannot ordinarily be introduced wires 12 may be twisted aroundthe guard lamp seated in said socket, there being an 'I'am aware thatchanges in the construeupon the guard but by cutting away the lower partof the projecting ends of the clamping band, as shown at 3*, the shademay be introduced upon the guard. When the shade is introduced upon theguard,

wires to hold the shade in osition.

tion and arrangement of the several parts of my device may be madewithout in the least departing from the nature and principle of myinvention.

Having thus described my invention, what I claim is:

.1. An incandescent lamp guard, comprising a wire cage adapted toinclose the lamp and a cushioning member within the cage, whichcushioning member comprises a series of wires which wires are bent intozigzag form, the bent portions occupying a vertical plane so as toafi'ord an extended bearing for engaging the surface of the lamp bulband having lateral extensions attached to a part of the cage.

2. In a device of the class described, a wire cage adapted to be clampedupon an incandescent lamp socket for inclosing the opening in the lowerend of the cage for the insertion and removal of the lamp, a bottomguard comprising a center body portion having extensions projecting indifferent -lateral directions therefrom, and hooks on said extensionswhich engage the" bottom of the cage.

3. In an incandescent lamp guard, a wire cage for inclosing the lampbulb, a spacing ring at the lower end of said cage, and a bottom guardfor the lower end of the cage, which guard comprises a series of wiresinterlooped to form a center portion having extensions projectinglaterally therefrom and hooks on said extensions which hooks engagethespacing ring on the bottom of the cage.

4. In an incandescent lamp guard, a wire cage for inclosing the lampbulb, a spacing ring at the lower end of said cage, and a bottom guardfor the lower end of the cage, which guard comprises two or more wiresinterlooped to form a center portion, and laterally projecting hooks toengage the spacing ring on the bottom of the cage.

5. In an incandescent lamp guard, comprising a wire cage adapted toinclose the lamp, and a cushioning member within the cage whichcushioning member comprises a series of wires bent into zigzag form, thebent portions occupying a vertical plane so as to afford an extendedbearing for engaging thesurface of the lamp bulb, and having lateralextensions formed by twisting two of the'wires around each other to beat tached to a part of the cage.

In testimony whereof I hereunto afiix my signature in the presence oftwo witnesses, this 8th day of January 1909.

WILLIAM N. MATTHElVS.

'Vitnesses F. R. CORNWALL, LENonE CLARK.

